these 2 derivations will be built:
  /nix/store/dk5n4bw29m2f0ha6pb0scmh06rmvyq6q-closure-info.drv
  /nix/store/c3w6686pff09ba070al9yfx9ladpvhwd-check-vars.drv
error: path '/nix/store/4d1798pmc3a64l0psc4xq9f70fpwllyg-check-vars' is not valid
error: Cannot build '/nix/store/c3w6686pff09ba070al9yfx9ladpvhwd-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/4d1798pmc3a64l0psc4xq9f70fpwllyg-check-vars